LT3009 Series

5

3009fb

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LT3009 regulators are tested and specified under pulse load

Performance at –40°C and 125°C is assured by design, characterization

and correlation with statistical process controls. The LT3009I is guaranteed

over the full –40°C to 125°C operating junction temperature range.

Note 4: Operating conditions are limited by maximum junction temperature.

The regulated output voltage specification will not apply for all possible

combinations of input voltage and output current. When operating at the

maximum input voltage, the output current range must be limited. When

operating at the maximum output current, the input voltage must be limited.

Note 5: Dropout voltage is the minimum input to output voltage differential

needed to maintain regulation at a specified output current. In dropout,

voltage will be limited by the minimum input voltage under some voltage/

load conditions.

Note 6: To satisfy minimum input voltage requirements, the LT3009

adjustable version is tested and specified for these conditions with an

The external resistor divider adds 9.69μA of DC load on the output. This

external current is not factored into GND pin current.

current source load. GND pin current will increase in dropout. For the fixed

output voltage versions, an internal resistor divider will add to the GND

pin current (

∼2μA for the LT3009-5, ∼1μA for the LT3009-1.2, LT3009-1.5,

LT3009-1.8, LT3009-2.5 and LT3009-3.3). See the GND Pin Current curves

in the Typical Performance Characteristics section.

Note 8: The SHDN pin can be driven below GND only when tied to the IN

pin directly or through a pull-up resistor. If the SHDN pin is driven below

GND by more than –0.3V while IN is powered, the output will turn on.

Note 9: Output noise is listed for the adjustable version with the ADJ pin

connected to the OUT pin. See the RMS Output Noise vs Load Current

curve in the Typical Performance Characteristics Section.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Output Voltage Noise (Note 9)

150

ADJ Pin Bias Current

l

–10

0.3

10

nA

Shutdown Threshold

l

l

0.2

0.66

0.36

1.5

V

V

SHDN Pin Current

l

l

0.5

±1

1.6

μA

μA

Quiescent Current in Shutdown

l

<1

μA

Ripple Rejection (Note 3)

LT3009

LT3009-1.2

LT3009-1.5

LT3009-1.8

LT3009-2.5

LT3009-3.3

LT3009-5

60

57

55.5

54

52

49

44

72

68

67

66

63

61

56

dB

dB

dB

dB

dB

dB

dB

Current Limit

l

22

60

mA

mA

Input Reverse Leakage Current

l

200

350

μA

Reverse Output Current

0.6

10

μA